S
SUN RA KAT
Guest
I went to the dyno this afternoon and my Viper made 580.4 HP and 607.6 pound/feet torque (SAE corrected). Flywheel numbers range from 666 HP to 680 HP - I predicted 675 HP before the test today. I think if there had been time for another run those numbers would have been higher by about 10 in each category.
My non supercharged numbers were 436.1 HP and 480.6 pound/feet torque.
The increase is 144.3 HP and 127 pound/feet torque at 5 pound boost.
++++++++++++++++++++++++++++++++++++++
SAE corrected Rear Wheel Measurement
Before
After
221.6 HP @ 2800 RPM
324.0 HP @ 2800 RPM
412.8 pound/feet @ 2800 RPM
603.5 pound/feet @ 2800 RPM
2800 RPM is used much, much more by me than the following peak numbers. Note the RPM at which they occur, both Before the Roe Supercharger and After the superchager.
436.1 HP @ 5300 RPM
580.4 HP @ 5700 RPM
480.6 pound/feet @ 4250 RPM
607.6 pound/feet @ 2950 RPM
The After numbers, especially the HP measurement are probably really 10 units higher because of the proximity to the dyno cut off at the low end (torque) and high end (HP). The high end looks like the dyno pull ended at 5750 RPM. The low end looks like the pull started at 2800 RPM.
I'll try to post the graph of the Before and After dyno runs superimposed real soon.
My non supercharged numbers were 436.1 HP and 480.6 pound/feet torque.
The increase is 144.3 HP and 127 pound/feet torque at 5 pound boost.
++++++++++++++++++++++++++++++++++++++
SAE corrected Rear Wheel Measurement
Before
After
221.6 HP @ 2800 RPM
324.0 HP @ 2800 RPM
412.8 pound/feet @ 2800 RPM
603.5 pound/feet @ 2800 RPM
2800 RPM is used much, much more by me than the following peak numbers. Note the RPM at which they occur, both Before the Roe Supercharger and After the superchager.
436.1 HP @ 5300 RPM
580.4 HP @ 5700 RPM
480.6 pound/feet @ 4250 RPM
607.6 pound/feet @ 2950 RPM
The After numbers, especially the HP measurement are probably really 10 units higher because of the proximity to the dyno cut off at the low end (torque) and high end (HP). The high end looks like the dyno pull ended at 5750 RPM. The low end looks like the pull started at 2800 RPM.
I'll try to post the graph of the Before and After dyno runs superimposed real soon.